Dynamo regulator



Nov. 4 1924. 1,513,892

F. H. BULLNGER DYNAMO REGULATOR Filed Dec. 17. 1920 Patented Nov. 4, 1924.

STATES 1,513,892!v PATENT imprimen. lRULpmenR, on vorraus, nRwXoRx, `assreruoza 'ro WARD LEONARD tenerme COMPANY, A CORPORATION or NRW YORK.

- AnYNAMo REGULATQR.

Application-filedfnecember 17, 192B;- Seral No'. 431,322. I

Tonelli whmvz'tmay comer/'n1 Bezit knoW-mthat-I, FREBERIC H. BULLIN- GERya oiti'en'rofsthe 1 United States-. resid-- f mentsuinaynamo Regulators, of .which the.

followingis aspecitieation.- Y

This invention relates to vdyn-amos driven IO--romwauvariable speedesourcefsuch as the- ;MS #engine ,of an.: automobile, .and to -means fortregulatng andcontrollng the charging current supl'ilied1byifthe dynamo to the stor, ger-,bsgttlyaand'sto lsmpsf-and other trans.

l--lating devices connected to the.batter,y,a.nd

dynomeeciouit.

QneLlobjectqf thzfinventio'n is to ,combine tli`e f-regu1tor `Withfthe dynamo to .fform a unita-ry :andE .selig contained construction. Y It thus, prod'uees` :a 5 simplified 1 unit with.v the enclosed Wit-hin. the dynas moxfralme `antifathus protected. Afrom dust andsdirtsandris. also?protected` from mechanfic'al. injury., .A Anotherobjeet is toproduce;,asmallsandaefcient regulatorand to Y make.-useof,sheemmetal ,partspas far as PQSSble-.in the construction of the regulator, to aaoida` far aspossible ,the use of rivets.- and-alsoptosavoid themeeessity of refined adjisnents in .thefassetinbly of the device. Another. objecefis, to ,produce a. simplified;

const ruetion; Vand relationship of c. parts,V

Whichulay. be cononnctlly 'manufactured and E aseemhled@E These and 1 other objects undfadvantageeeof `.my?,invention Will vhe understood *l 1 the f following Y 4description and drawings,y which, illustrate.'apreerredembodiment of my invention 40 i l,lis @sectional view of a,I portion of a .dyliamoishoingl .the unionrof aregulator` thereyithndeshowingiawplan view .of the i'egumtor, QFig; 2 liswafront elevation of the, regulator yandj brushframe removed from.

vthe;dynanni..liig' -isaplan view of a` portiongiflthelg regulator -yvit-h the cover of certairn-parteA'removed. Fig. 4 is a, rear view 0f rpoliteuof therregulatorswth the Cover remoyedgllig.' 5 ifs;adevelopmentof one of the parts, and Fig. 6 is a, diagram of counetions Refeiifingato I. 1, the ,dyn-amo'farmature, l. is indicate having a lcornmutator 2 audi aremeveblefendirame 3..; 4ilh-s trame iS showers, @arr-ying; the bearing for one ,thereto by the screw. l0".

end of thefarmature shaft 5,- "and= also car'.4 rlesa circular brush'l frame. 6. .The -rame' 6 Y hasn. iangef'' by which it is secured to the frame 3 byScrewsfS.. The-brush: frame is angularly adjustable for properly .positionh ingrethe brushes, 1 the .screws k'8 passing throughslots orient-away: portions. in the ange 7 and engaging a. clamp or-ring-.fwithin theflange l7, kWhich yservesf tov hold the. hruslrirame .in anyfdesired. yangular posi- 4tion,.an adjustable; mounting being-,usual in dynamo. construction.,- ,In `this particular instance,-

four. pole4 dynamo is conteniplated having two lorushes.y 9, 9, spaced angularly 909oapart, Athe brush holders -10 being mountedfuponthe brush ringG. Each brush c holderl has. aprojectng lug 10 With ascrewV 105 to form. a. terminal connection.v .The

.springsll for the brushes are-shown Vmounted ,on lugs extending fromthe bruslr .holders and. extending through cut-away portions in ythe brushholders for engaging theoute-r ends of the brushes.v

The upper brush holder is insulated from thehrush; ring by sheets l2 of insulating material; ,which are'circulanin Ashape and also serve-to insulate the regulator frame fromfthe'brush ring.- The mainframe of the regulator consists of a sheet met-al piece of non-magnetic material hent at right angles vandhaving one port-ion 1%aL in a. plane perpendicular to they axis of the dynamoshaft and .v another portion 13b at .right I angles to the other portion.

Anextension l39extends from the portion-13" of the frame, and. enga-ges the lug 103,01? the upper hrushholder being secured The part 13 thus. Serves as an electrical connection between the brush `holder and the regulator frame as Well as av supporttherefor. The portion lbof kthe frame also has another extension 13d bent at right angles thereto and extending parallel to the brush ring to which it is suitablymechanicallysecured, hut electrically insulated therefrom. The eX ension ,13d also has supported `thereon a tubular resistance unitli, which in this Ainsta-nce. isplacedgendwise on theextension.

andu servesr to ,form the comparatlvely 1 hlgh 105 mounted perpendicularly to the plane of the portion 13a of the Yframe and extending inwardly over the commutator of the dynamo as shown in Fig. 1. The three ends of this stamping extend through three slots in the portion 13a of the frame, and the two outer legs of the stamping have cut away shoulders at their ends to seat against the face of the portion 13a and have their ends headed over on the opposite side of the portion 13c .to secure the same firmly thereto.

means of a phosphor bronze strip 19, which is clampedto one end of the armature by means of a sheet niet-al piece 2O having a tongue 2Oa on each edge which is bent over the strip 19 and armature 18 through side notches therein, thus clamping the parts together in a lixed position. A fixed support for the other end of the strip 19 is formed by a. pair of sheet meta-l blocks 21 notched on opposite sides as shown in F ig. 4 on which is located one end of the strip 19. The

parts are clamped to the portion 13a of themain frame by another sheet metal block 22 having tongues 22a on opposite sides to en- ,gage the notches in the pieces 21 and which also pass through slots in the portion 13a and are bent over on the opposite side of the portion 13, thus clamping these parts in fixed position.

The opposite end of the armature carries a contact 18a adapted to make and break the circuit with the ixed contact 23. The latter is carried by a sheet metal piece 24 secured to the portion 13a of. the frame, but electrically insulated therefrom. The piece 24 has two right angle bends as shown in Fig.

3 so as to bring the fixed contact 23 in prop er position with relation to the vibratory contact 18a.

A spring 25 tends to normally holdthe contact 18a against the fixed contact. This spring is in the form of a wire having a hook on one end by which it is secured to the movable end of the armature by being passed through two holes as shown in Figs. 3 and 4.. The spring 25 passes over a fulcrum 22h, which is formed by bending a portion of the sheet metal piece 22 at right angles, the outer edge having a notch therein to receive the spring. From the ulcrum the spring ex- The Y middle. leg of the stamping carries a coil tends under a hook 22, which is also integral with the sheet metal piece 22, the hoolrbeY ing stamped out with the other parts of the sheet metal piece 22 and afterwards bentat about right angles thereto to form a fixed support tor one end of the spring. The de-` velopment of piece 22 is shown in Fig. 5.

vof its base it will draw the end of the spring nearer to the base and thus exert a greater tension tending to'hold the contacts closed, whereas bending the portion 22 towards a position perpendicular to its base will lessen the tension on the spring. In this manner quick and .permanent adjustment of the spring tension may be readily and conveniently obtained. The 'fulcrum 22b maysimilarly be bent if desired for adjusting the spring tension. .l v

Also secured to the portion'la'of the main 'frame and on the opposite side from the sheet metal piece 24 is another sheet metal piece 26. This hasthe bent portionr26a 'facing the part 13a, but insulated therefrom and electrically connectedvto the strip 24 by the attaching rivets 26h. Piece26 has an extension 26c with a. screw 26.1 to form-a terminalV connection. It also has another extensionV 26l which extends over the resistance unit' 14 and has a tongue extending downwardly within the resistance 'tube for theipurpose oi holding the` resistance. tube 1 in position.

The operating parts of the regulator are enclosed by the portions 13n andl13b of the regulator frame together with a removable .sheet `metal cover. This cover is stamped Vfrom sheet metal and bent to form a top cover portion 29, which is slotted near one edge to receive a projection 13e from the portion 13a of the trame, serving to thus position thecover piece. The cover piecehas a down-v wardly extendingside portion with aprojection extendinginto the slot 13f in the part 13b of the main frame, rlfhe coverpiece also has enclosing end portions. with -extensions which project through the slots 13g also in theportion 13b of the main trame, the-projections 'from' the cover piece passingL through these slots being adapted to be bent Y over on the lower side of the part 13b to hold the cover piece in place or to be otherwise secured, as by the maimtacturers seal to prevent unauthorized-A of the regulator. I

The circuits and electrical connections of The dynamo is indicated at 1 having the two brushes 9 and a shunt iield winding 27. The

upper brush 9 is electrically connected to the tampering or adjustment the -parts will'be understood from Fig. 6. j

'Luanne 'main frame kof the regulator and to the iron part.' 11:3 ofinthelmagneuvfrom which rthe circuitcontinue's .through the series coil 16 to the leads and suitableswitches to the-battery 28 and other translating devices in parallel, from which. the circuit is completed back to L the lower brush-9.` The ield Winding is connectedfrom the lower brush -9 to the terminal. connectionQGC and thence, by the constructionl alreadycescribed, the circuit is continued through the sheet` metal pieces 26 and 24 to the fixed contact Q3; thence the circuit continues;throughthe movable contact and vibratory armature to the main frame of the regulator and to the upper brush 9.. The resistance 14 is thus normally shunted by the regulator contacts, one lead from the resistance being connected to terminal 26@ and the other lead to the main frame.

In operation With the dynamo being driven at a suitable speed and the charging circuit to the battery closed through the usual cutout switch, the parts will remain in the position shown until the charging current attains a predetermined maximum value, at which time the armature 18 Will be attracted by the magnet, breaking the shunt around the resistance 14, at the regulator contacts. This throws the resistance 14 into the field circuit, causing` the chargin current to be reduced to a predetermined minimum, at which time the spring 25 overcomes the attractive force ot the magnet and closes the circuit atV the regulator contacts. This short circuits the resistance 14 and causes the voltage of the dynamo and the charging current to be increased to the predetermined maximum value. This cycle of operations is continued as long as the speed of the dynamo is suicient to cause the pre.- determined maximum charging current to be attained with the regulator contacts closed. The battery is thus protected from excessive charging current by the vibratory action of the regulator.

Although I have illustrated and described in detail one embodiment of my invention, it Will be understood that various modifications may be made and that my invention may be exemplilied in various embodiments, Wit-hout departing from the scope of the invent-ion,

I claim:

1. The combination of a dynamo and an electric circuit controller for controlling the output er said dynamo, said controller comprising a frame carried by the brush frame of the dynamo, said controller frame having a portion thereof contacting With and in direct electrical connection with a brush holder of one of the dynamo brushes, said frame also forming a terminal of said controller.

Q. The combination of a dynamo having a brush frame, and an .electric .circuit convtroller for controlling the output ot .the dynamofcarried by 'suid trame, said coiitroller comprising an .electro-magnet having .a Vcontrolling coil extending `over the comniutator of the dynamo with its axis parallely with the axis vof the dynamo.

3. The combination of a dynamo having a brush frame, and an electric circuit controller for controlling theoutput of the dynamo carriedl by'. said trame, said controller Vcomprising an. electro-magnet having a controlling coil extending over -the commutator of the dynamo with its axis parallel With the axis of the dynamo, and said controller having a frame directly engaging and in electrical Contact with and supported by a brush holder of one of the dynamo brushes.

4. The combination of a dynamo, and an electric. controller for controlling the output of the dynamo, said controller comprising a frame carried by the brush frame of the dynamo, cont-act controlling means on one side of said controller frame, and an electro-magnetic Winding on the opposite side of said controller frame and extending over the commutator of the dynamo,

The combination of a dynamo, and an electric circuit controller for controlling the output of the'dynamo, said controller comprising a frame carried by the brush trame of the dynamo, said controller frame having a sheet metal portion extending at right angles to the axis of the dynamo, and an electro-magnet supported on said portion of the controller frame and extending over the commutator of the dynamo.

6. The combination of a dynamo, and an electric -circuit controller for controlling the output of the dynamo, said controller comprising a frame carried by the brush frame of the dynamo, said controller frame having a sheet metal portion extending at right angles to the axis of the dynamo, an electromagnet supported on said portion of the controller frame and extending over the commutator of the dynamo, and contact controlling means on the opposite side of said portion of said controller frame.

7. The combination of a dynamo, and an electric circuit controller for controlling the output of the dynamo, said controller comprising a frame carried lby the brush frame ot the dynamo, said controller Jframe having a portion extending at right angles to the axis of the dynamo, an electro-magnet supported on said portion of the controller frame and extending over the commutator ot the dynamo, said controller frame directly engaging and in electrical contact With a brush holder of one of the brushes of the dynamo, and said controller frame also forming a terminal of said controller.

8. The combination of a dynamo, and an electric circuit controller forreontrolling the output of the dynamo, said Controller coin- Vprising a frame carried by the brush frame of the dynamo, eleotroemagnetio controlling means carried by said cont-roller fra-me, a controlling' resistirme unit carried by the 'brush frame, and an insulated terminal carried by said controllerv frame for positioning said resistance unit and forming oneV ternfiinal of said unit.

9. The combination of at dynamo, and an electric circuit controller for Controlling the output o'ii the dynamo, said controller comprising` a frame carried by the brush frame of. the dynamo, electro-magnetic ycontrolling Y means earrlecl'by said controller frame, a

a terminal of said cont-roller and also form-V ing a terminal of one of the brushes of the dynamo. Y

FREDERIC n. BULLINGER. 

